nRF24E1 Nordic VLSI, nRF24E1 Datasheet - Page 47

• Manufacturer Part Number: nRF24E1
• Description: 2.4Ghz RF Transceiver With Embedded 8051 Compatible Microcontroller And 9 Input, 10 Bit ADC
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
Bit
EIP.7-5
EIP.4
EIP.3
EIP.2
EIP.1
EIP.0
Table 7-7 : EIP Register – SFR 0xF8
When an enabled interrupt occurs, the CPU vectors to the address of the
interrupt service routine (ISR) associated with that interrupt, as listed in
7-8
priority occurs. Each ISR ends with an RETI (return from interrupt) instruction.
After executing the RETI, the CPU returns to the next instruction that would
have been executed if the interrupt had not occurred.
Interrupt
INT0_N
TF0
INT1_N
TF1
TI or RI
TF2 or EXF2
int2
int3
int4
int5
wdti
Table 7-8 : Interrupt Natural Vectors and Priorities
Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
. The CPU executes the ISR to completion unless another interrupt of higher
Function
Reserved. Read as 1.
PWDI - RTC wakeup timer interrupt priority control. WDPI = 0 sets
wakeup timer interrupt (wdti) to low priority. PS = 1 sets wakeup timer
interrupt to high priority.
PX5 - interrupt 5 priority control. PX5 = 0 sets interrupt 5 (RADIO.DR2)
to low priority. PX5 = 1 sets interrupt 5 to high priority.
PX4 - interrupt 4 priority control. PX4 = 0 sets interrupt 4 (RADIO.DR1)
to low priority. PX4 = 1 sets interrupt 4 to high priority.
PX3 - interrupt 3 priority control. PX3 = 0 sets interrupt 3 (SPI_READY)
to low priority. PX3 = 1 sets interrupt 3 to high priority.
PX2 - interrupt 2 priority control. PX2 = 0 sets interrupt 2 (ADC_EOC)
to low priority. PX2 = 1 sets interrupt 2 to high priority.
Description
External interrupt 0
Timer 0 interrupt
External interrupt 1
Timer 1 interrupt
Serial Port transmit or
receive
Timer 2 interrupt
ADC_EOC interrupt
SPI_READY interrupt
RADIO.DR1 interrupt
RADIO.DR2 interrupt
RTC wakeup timer
interrupt
QhtrÃ#&ÂsÃ(&
Natural
Priority
(lowest
number gives
highest
priority)
1
2
3
4
5
6
8
9
10
11
12
Interrupt
Vector
0x03
0x0B
0x13
0x1B
0x23
0x2B
0x43
0x4B
0x53
0x5B
0x63
Table
July 2003